[ZPT] Some Macros Questions/Suggestions

Mon, 04 Mar 2002 13:25:48 +0000

On 4/3/02 11:55 am, "Chris Withers" <chrisw@nipltd.com> wrote:

> Hi,
> 
> Coupla questions relating to METAL macros.
> 
> 1. Can I dynamically compute which template I get my macros from?
> 
> Something like the following would be cool if it worked:
> 
> <html metal:use-macro="python path('here/somemethod')+'/macros/main'"
> <body metal:fill-slot="body>
> ###
> Some specific rendering here
> ###
> </body>
> </html>
> 

I'm using this *excellent* snippet from ZopeLabs by PeterBe
(http://www.zopelabs.com/cookbook/1014285275)

<!-- The "default" and simple way -->
<html metal:use-macro="here/standard_masterlook/macros/standard">

<!-- A centralized metal macro -->
<html metal:use-macro="here/getHeader">

#
# The getHeader() Python Script method object
#
return context.standard_masterlook.macros['standard']

#
# Suppose you want to improve getHeader()
# 
if somecookie == 'textmode':
    return context.standard_masterlook_text.macros['standard']
else:
    return context.standard_masterlook.macros['standard']

My own version does this...
request = container.REQUEST
RESPONSE =  request.RESPONSE

try:
    cookies = request.cookies
    useme = cookies['macroTemplate']
except:
    useme = 'fancy'

if useme == 'master':
    return context.mymacros.macros['master']
else:
    return context.standard_look.macros[useme]

Ie it gets the macro expansion you want *based on the value of a cookie* and
from the macro template you want. Veeery cool. I'm using it to supply a
bog-standard page or one with some CSS or one with CSS2 constructs.

Tone
-- 
Dr Tony McDonald,  Assistant Director, FMCC, http://www.fmcc.org.uk/
The Medical School, Newcastle University Tel: +44 191 243 6140
A Zope list for UK HE/FE  http://www.fmcc.org.uk/mailman/listinfo/zope